Category 2 or Category II may refer to:

• Category 2 cable, a grade of unshielded twisted pair cabling
• Category 2 tropical cyclone, on any of the Tropical cyclone scales
• Category 2 pandemic, on the Pandemic Severity Index, an American influenza pandemic with a case-fatality ratio between 0.1% and 0.5%
• Category 2 winter storm, on the Northeast Snowfall Impact Scale and the Regional Snowfall Index
  • Any of several winter storms listed at list of Northeast Snowfall Impact Scale winter storms
• Category II New Testament manuscripts – Egyptian
• Category II measurement – performed on circuits directly connected to the low voltage installation
• Category-II Miniratna public sector undertakings (India)
• Category II protected area (IUCN) – National Park
• Category 02 non-silicate mineral – Sulfides, Sulfosalts, Sulfarsenates, Sulfantimonates, Selenides, Tellurides

• Class 2 (disambiguation) – class/category equivalence (for labeling)
• Type 2 (disambiguation) – type/category equivalence (for labeling)
• Group 2 (disambiguation) – group/category equivalence (for labeling)